Heel-beveling machine



Se t. 2 19 p 0 27 M. F. BROGAN HEEL BEVELING MACHINE Filed Aug. e', 1924Patented sept. 20,v 1927.

UNITED STATES MICHAEL FRANK EROGANL or, LAWRENCE, irassnorrisnrrrs,`AssIGNoR To UNITED SHOE MCHINERY'CORPORATION, OF PATERSON, NEW JERSEY, AvCORPORATION OF NEW JERSEY.

' YHEEL,-BEvELIiver MACHINE.

Application filed August G, 1924. Serial No. 730,455.

This invention relates tovcutting machines and is herein illustratedasiembodied in. a machine adapted to bevel the margin of a kspring`heel. l l I In t-lieiiian11fact1ire of shoes havingsoles of creperubber, it is customaryto provide spring heelsI of that material. Thesevspring heels are made by dieing` ,outv properly sliaped'blanksfroincrepe rubber sheets and thenr lieveling` the forward margins of theblanks. Becauseofthe nature of crepe rul ber, ythis beveling operationhas presented considerable 'dii'licultyf and, so far as I ain aware, hashitherto *been performed by means vof a hand knife manipulated in such amanner as to produce'a draw cut. l

The general object of the presentinvention is to provide av machine byythe use of whichl this and similar `operations .may be performed withrapidity and precision: n Accordingly. the present invention is1llustrated as embodiedin a machine comprising a` work-support and arotary` disk cut-ter whichV are relatively movable to cause the cuttoprogress through the work. The illustrated*workfsupport is movable forthis purpose, and is therefore hereinafter termed ra work-carrier. Inthe illustrated machine, the work-carrieris provided with a bed toengage the attaching face of a. heel blank, an abutmentv to engagethebreastl face and thereby register tlie heel relatively to the cutter,and with an abutment to engage one side of the periphery ofthe heelblankand thereby push the lat-ter widthwise past the cutter. Thus, while thework-carrier is move able lengthwise of the major dimension of a cut thecutting load at any instant is limited Ato the minor dimension, and whencutting :rubber this is. preferable to minimize the distortion of therubber,` inuch of which isdue .tofriction'. lThe work-carrier isalsopreferablyprovided with a 'grooveinto which the cuttermayproject toAcut. entirely through thework without touching-the carrier. A heelblank supported .by a carrier having a Ybed to engagetbe attaching face.anr abutment to` engagethe breast face,*and anabut- .ment .toengage onevsidefof the periphery as displacement by tliecutter, and since no otherclamping means is needed, successiveblanks may be beveled with greatrapidity and accuracy. t

These and other features ofthe invention, including certain details ofconstruction Vand combinations of parts, will be described kas embodiedin an illustrative machine and pointed'outin the appended claims.

. Referring now to the accompanying drawings, i

Figure 1 isa perspective of amacliinein which the present invent-ionis'` embodied;

Figure 2 is: a perspectivecf aI piece of work after Vit has beenoperated upon; l I Figure 3 is a. detail in perspective ofthe carrierfor .the blank and the guide upon which it is slidable, and

. Figure; 4 is a view partly in section and partly in elevation ofaportionof the machine showing a heel blank in process of being operatedupon.

Tie pedestal 5 4of t-liemacliine. has a segL mental top 7 upon whichrest two lugs, one of which is shown at 9, formed at the lower end of agenerally U-shaped head 11. Cap screws, one of which is shown at 13,eXtend ing through slots in the segmental top 7 and threaded into th-elugs hold the head 11 in place and permit the head to ybe tilted' intoand held in different positions. Rotatably mounted inthe arms oftheU-shaped head are two alined shafts one of which 15 carries at its outerendfa disk ycutter 177. The other yshaft 18 ris slidaole` in thislbearing and carries a pulley 19. The rear end of the cut-ter shaft andthe front face of the pulley carry complementary .clutch members whichmay be caused to be engaged ordisengaged by pushing or pulling thehandle 21 on the slidablymounted square rod 23, the forward end ofvwhich` has a linger extending intofa grooveQ form-ed inthe hub of thepulley 19. The particular. clutch has not been shown since `thedetailsoffits Vrconstructiony formino part of. the presentpinvention and,any suitableclutch may be used. A belt, indicated by the dot and dashrline, runs around. the pulley. 19, over` idle pulleys 27 and up aroundapower-pulley, .not `showinfthis arming-ement ofbelt and pulleyspermitting v CTI the head ll to be tilted without disturbing the drivingconnection. l

The invention includes a manually movvable work-carrier upon whichrthearticle of work may be held by the operators lingers so that onehandwillv be suflicient to move A the carrier past the cutter and tomaintain site sides of the cutter without clamping the work.Consequently, a true and accurate cutV is insured and the passage of thecutter through the material, particularly through rubber,is madeeasierand the waste material is'left free to r-ecede from the cutter asthe cut progresses. f z

The mountingv for the work-carrier comprises an arm or fixture 29projecting from the head 11 under the cutter, and adjustable bracket 33,35, and a horizontal guide 39 affixed to said bracket by screws 87. Asegmental slot 30 is formed inthe bracket and the latter is clamped tothe arm 29 by bolts 31v extending through said slot.

The work-carrier comprises a flat bed 41,

preferably inclined, anl abutment 43 at the Cil lower edge of the bed toregister the heel blank relativelyto the cutter, and abutments 68 at theends of the bed.v The bed and the v abutment 43 form a square trough toreceive the initially square breast portion of a heel as' shown in Fig.4, and a groove 49 is formed in the deepest part of this trough toreceive a portion of the cutting edge ofthe cutter 17 so that the lattermayv cut entirely through the heel blank without touching the carrier.To obtain the groove 4911 preferably make the abutment 43 as a separatepiece, form a rabbet therein, insert a spacer Movement of thework-carrier in one di-V rection is arrested by an abutment 51 aiiixedto one end of the guide 39and movement in the opposite direction isarrested by the head of a screwV 50 set into the guide. 'work-carriermay be automatically returned to the abutment 51 by a tension spring 52fif vone end thereof is attached to said abutment and the other endto apin 'fastened to the carrier (see Figgl).

To bevel the breast of aV heelblank the attaching face'of theblank islplaced on the bed 41, the square or abrupt breast face '1S The placedagainst the abutment 48, and prefer-l ably the periphery at one side ofthe blank is placed against the abutment 63 that will act as a backer tobrace or push the blank against the cutter.

While grasping the upper part of the work-carrier and the heel blankbetween theV a cock 61. Also, a segmental shield 55' mayL be arranged tosurround the upper part of the cutter so that the operators hand i willbe protected.

Although the invention has been set forth as embodied vin a particularmachine, 'it should be understood lthat the invention is not limited inthe scope of its applica-tion to the particular machine which has beenshown and described.

Having thus described my invention, what I claim as new and desire t-osecure by Letters'Patent of the United States is':- d

1. VA cutting machine comprising a workv support having surfacesarranged to engage two angularly related meeting surfaces of an articleof work, said work-engagingsurfaces forming a trough, and a rotary diskcutter arranged to operate in said trough, said support and said cutterbeing Vconstrained vto relative rectilinear movement-'lengthwise of'said trough to cause the cut to progress through the work.

2. A cutting machine comprising a worksupport having a groove andnon-confront-v ing work-engaging surfaces at opposite sides of saidgroove, and a rotary disk cutter arranged to project into said groove,said sup` port and said cutter being constrained to relative rectilinearmovement lengthwise of said groove to cause the out to progress throughthe work. n

3. A cutting machine comprising a movable work-support having rigidlyrelated non-confronting work-engaging surfaces forming a trough toreceive the work and having a groove extending lengthwise of said troughat t-he deepest part thereof, a

lll() rotary disk Acutter arranged to project into v 'said trough andinto said groove, andmeans to guide said work-'support in straight lineslengthwise of said trough. l Y

4. A cuttin-g machine comprising a worksupport having a groove andnon-confronting work-engaging surfaces at opposite sides of said groove,and a cutter arranged to pro-l ject' into'said groove, said support and.Said

cutter being relatively movable lengthwise of said groove and relativelyadjustable to vary the angle of the plane of the cut.

5. A cutting machine comprising a work-` support having a bed to engagethe attaching face of a heel blank and having an abutment to engage thebreast face thereof, and a cutter arranged' to sever the blank with anoblique cut to produce an inclined breast tace, said support and saidcutter being relatively movable widthwise of a blank placed on saidsupport as aforesaid.

6. A cutting machine comprising a worksupport having a bed to engage theattaching face of a heel blank, an abutment rigidly related to said bedto engage the periphery at one side of the blank, means to engage thebreast face of said blank, and a cutter arranged to Sever the blank withan oblique cut to produce an inclined breast face, said support and saidcutter being relatively movable widthwise of the blank to cause the cutto progress toward said` abutmenty from the opposite side of the blank.

7. A cutting machine comprising a workcarrier having a bed to engage oneface of an article of work, and a rotary disk cutter arranged totraverse the opposite face of the article and cut the latter in two,said carrier being movable along lines parallel to the plane of said bedto effect cutting progress, saidcutter being at an acute angle to saidplane to produce a bevel cut, and said carrier having vtwo work-engagingabutments one t0 register rthe article of work relatively` to saidcutter and the other to push the article along the lines of movement ofthe carrier.

In testimony whereof I have signed my name to this specification. Y

MICHAEL FRANK BROGAN. y

